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Finding the Fourth Proportional to 91,759.54, 137,594.81 and 53,821.21

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Solution

The fourth proportional to 91,759.54, 137,594.81 and 53,821.21 is: 80,705.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,759.54 : 137,594.81 = 53,821.21 : x
  2. Step 2: Convert to fraction form
    91,759.54/137,594.81 = 53,821.21/x
  3. Step 3: Cross multiply
    91,759.54x = 137,594.81 × 53,821.21
  4. Step 4: Simplify right side
    91,759.54x = 7,405,519,163.92
  5. Step 5: Solve for x
    x = 7,405,519,163.92/91,759.54
  6. Step 6: Final answer
    x = 80,705.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.